New anthracycline antibiotics 10-epi-oxaunomycin and 10-epi-11-deoxyoxaunomycin
Two new anthracycline antibiotics, 10-epi-oxaunomycin and 10-epi-11-deoxyoxaunomycin, were photochemically obtained from anthracycline metabolites D788-1 (10-carboxy-13-deoxocarminomycin) and D788-3 (10-carboxy-11-deoxy-13-deoxocarminomycin) and were examined for their growth inhibitory activities on cultured L1210 leukemic cells. Effects of the S configuration of C-10 and a hydroxyl group at C-11 on the bioactivity are discussed in comparison with oxaunomycin and 11-deoxyoxaunomycin.
Johdo,Nishida,Okamoto,Yoshimoto,Takeuchi
p. 1153 - 1158
(2007/10/03)
Synthesis of a potent rhodomycin, oxaunomycin, and its analogs
Oxaunomycin (3) and its regioisomer (6) were synthesized by employing regioselective glycosidations of the C-7 hydroxyl group of 10-O-acetyl-β-rhodomycinone (16) and the C-10 hydroxyl group of the C-7,9-O-phenylboronate (14), respectively, in the presence